| Source | Format | Includes PGN? | Price (approx) | |--------|--------|---------------|----------------| | (website) | Physical + eBook PDF | No, but diagrams in book | $32.95 | | Chessable | Interactive video + move trainer | Yes (exportable) | $49.99 | | Forward Chess | eBook with built-in board | No export, but interactive inside app | $29.99 | | Amazon Kindle | MOBI/PDF | No | $25.99 |